Ok, seems that some stuff in standard e107 causes issues in Mozilla resulting in a not-showing of the menustructures for the users.Change the file e107_themesemplatesheader_default.php as follows:starting at about line 33 change from :$sql->db_Mark_Time('(Header Top)');echo (defined("STANDARDS_MODE") ? "" : "")."##SANITISED## xmlns='http://www.w3.org/1999/xhtml' ".(defined("TEXTDIRECTION") ? "dir='".TEXTDIRECTION."'" : "").">to: $sql->db_Mark_Time('(Header Top)');//echo (defined("STANDARDS_MODE") ? "" : "")."//##SANITISED## xmlns='http://www.w3.org/1999/xhtml' ".(defined("TEXTDIRECTION") ? "dir='".TEXTDIRECTION."'" : "").">//"echo "that should fix it. Now the menustructure will also show up in Mozilla browsers.Tested with e107 v.07 and mozilla 1.7.3